WO2002083999A1 - Procede de degraissage de laine - Google Patents

Procede de degraissage de laine Download PDF

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Publication number
WO2002083999A1
WO2002083999A1 PCT/AU2002/000455 AU0200455W WO02083999A1 WO 2002083999 A1 WO2002083999 A1 WO 2002083999A1 AU 0200455 W AU0200455 W AU 0200455W WO 02083999 A1 WO02083999 A1 WO 02083999A1
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WO
WIPO (PCT)
Prior art keywords
alkyl
wool
acid
scouring
detergents
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Application number
PCT/AU2002/000455
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English (en)
Inventor
John M. Swan
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Hallmark Dell Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hallmark Dell Pty Ltd filed Critical Hallmark Dell Pty Ltd
Priority to NZ528619A priority Critical patent/NZ528619A/en
Priority to AU2002245947A priority patent/AU2002245947B9/en
Publication of WO2002083999A1 publication Critical patent/WO2002083999A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
    • C11B11/00—Recovery or refining of other fatty substances, e.g. lanolin or waxes
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01C—CHEMICAL OR BIOLOGICAL TREATMENT OF NATURAL FILAMENTARY OR FIBROUS MATERIAL TO OBTAIN FILAMENTS OR FIBRES FOR SPINNING; CARBONISING RAGS TO RECOVER ANIMAL FIBRES
    • D01C3/00—Treatment of animal material, e.g. chemical scouring of wool
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/74—Recovery of fats, fatty oils, fatty acids or other fatty substances, e.g. lanolin or waxes

Definitions

  • the present invention relates to the cleaning of raw wool and other greasy and/or waxy textile materials, and in particular to a process for scouring wool utilising anionic, non-ionic detergents, amphoteric detergents, or blends thereof.
  • the invention also relates to scouring wool in an acidic environment. Furthermore, the invention relates to recovering significant percentages of the wool wax and allows for re-use of substantial quantities of the water used in the scouring.
  • “fleece wool” and it contains large amounts of dirt, vegetable matter, suint salts (salts of long chain carboxylic acids) and wool wax. These need to be removed to create clean wool that can then be further processed.
  • the greasy wool contains:
  • Wool fleeces are traditionally opened in hoppers and drum openers and the wool staples are then scoured by passing them through a series of water baths of varying temperatures containing detergents.
  • the scouring action of these various organic detergents removes grease and dirt, together with other contaminants which are also present in raw wool. Scouring is the first stage in wool processing. It is a aqueous chemical and mechanical cleaning process using detergents, typically either nonylphenol ethoxylates or fatty alcohol ethoxylates at a usage of around 10 kg per 1000 kg of greasy wool, concentrations of 0.03 to 0.06% v/v in the scour bowls, reasonably high temperatures (65°C), and agitation to clean the wool.
  • detergents typically either nonylphenol ethoxylates or fatty alcohol ethoxylates at a usage of around 10 kg per 1000 kg of greasy wool, concentrations of 0.03 to 0.06% v/v in the scour bowls, reasonably high temperatures (65°C), and agitation
  • wool scouring consists of four successive treatments of the raw wool as it passes through the scour train: firstly a washing process at temperatures around 28 to 30°C, designed to remove some of the dirt and suint, secondly a scouring process at temperatures around 65°C to remove most of the wool wax and remaining dirt and suint and other contaminants, thirdly a rinsing process to separate the last of the scour liquors entrained in the wool fibres, and fourthly a drying process to yield the scoured product.
  • Most wool scours operate at around 65°C in the scour bowls to take advantage of the fact that wool wax liquefies at about 40°C, with lower temperatures in the wash and rinse bowls.
  • Scouring is normally done without adjustment of the pH of the bowls, and so, because of the variety of wool scoured, the pH in the scour bowls is usually between 6 and 8.
  • Some scourers add small quantities of an alkali such as sodium carbonate to the scour bowls, resulting in a higher pH, e.g., in the range 8 to 9.
  • Wool scourers often use a combination of bowls in the scouring process which are well documented in the literature. These are typically:
  • the cleaned wool is finally dried prior to further processing.
  • the cost of treating the effluent from the scouring process represents one of the major costs to a scourer operation, second only to the cost of labour. For every kilogram of clean wool produced, five to eleven litres of mains or clean water is used. Discharge rates to sewer, based on the Biological Oxygen Demand (BOD) and Suspended Solids (SS) levels of the effluent, will continue to increase through regional government legislation in an effort to encourage high users of water to adopt water-saving and recycling methods. The cost of purchasing mains water is also increasing as the true costs of supplying drinking water begins to be incorporated into its price. When treating the effluent to remove the factors producing the BOD and
  • a solid waste stream is produced which must either be treated or disposed of.
  • Practices currently deal with this solid waste by either transporting it to specific landfill sites (the solid waste is classified as a "prescribed waste” and therefore commands a premium tipping cost) or a lagoonal sewerage system is used to settle/biodegrade the solid particulate and organic material. Eventually the solid material must be removed from the lagoons or the system breaks down.
  • the present invention aims to:
  • the pH in the scouring process is modified in the scouring process, preferably either in the scour bowl or prior to centrifugation. It is preferred that the pH be modified to the range 3 to 7 and preferably to between 4 and 5 in the scour bowl. Alternatively, the pH can be lowered to between 1 and 7 and preferably between 4 to 5 prior to centrifugation. This enables the aqueous emulsion formed from the detergent and the wool wax to be broken more easily, with an increase in the recovery rate of the wool wax.
  • a method of cleaning textile materials comprising: (a) subjecting the textile material to a washing process in a washing solution comprising water, or water containing a suitable wetting and/or chelating agent at a temperature of between about 15°C to about 35°C;
  • the wetting and/or chelating agent is selected from citric acid, nonyl phenol ethoxylate, polyphosphoric acid, sodium alkyl sulphate, CalgonTM, sodium tripolyphosphate and long chain sulphonic acids, which are most preferred.
  • the method includes repeated washing, scouring and rinsing steps, preferably with counter-current flow of aqueous solution and textile material.
  • the preferred long chain organic sulphonic acid detergent used in the scouring process can be blended with other detergents if desired.
  • effluent from the washing step(s) is used in fertiliser production as a source of sodium and potassium salts, in the case where the textile material is wool or the like.
  • the textile material to be cleaned is oily, waxy and/or greasy textile material including animal and/or synthetic and/or vegetable fibres or textiles woven from them.
  • animal fibres include sheep's wool, 5
  • Another disadvantage of existing scouring systems is the entanglement of the wool during scouring.
  • the entanglement increases with water temperature, pH and time of agitation.
  • anionic detergents are alkylaryl sulphonic acids and their salts, alkyl sulphonic acids and their salts, alpha-olefin sulphonic acid and its salts, alcohol sulphates and their salts, alcohol ethoxy sulphates and their salts, alkyl sulphosuccinic derivatives, alkyl ether carboxylates, alkyl phosphates and alkyl ether phosphates, alkane sulphonates and their salts, alkyl phenol hydrogen sulphate and their salts, alpha-sulpho methyl esters, alkyl isethionates, and acyl sarcosinates, are preferred.
  • the nonionic detergents are typically ethoxylated alkylphenol, ethoxylated alcohols, ethoxylated fatty acids, fatty acid alkanolamides, ethoxylated alkyl amines, alkyl amine oxides, alkyl amidoamine oxides, glyceryl fatty acid esters, sorbitan and ethoxylated sorbitan esters, sucrose esters, alkyl poly glucosides, ethylene oxide / propylene oxide copolymers, and ethoxylated/propoxylated alcohols.
  • amphoteric detergents are typically alkyl dimethyl betaines, alkyl amido betaines, alkyl sulphobetaines, alkyl amido sulphobetaines, imidazoline betaines, alkyl amino propionates, alkyl betaines, alkylamine oxides, and alkylamido propyl betaines.
  • the anionic, non-ionic, and amphoteric detergents can be used individually or in combination. cashmere, mohair and other goat hairs, down, alpaca hair, llama hair, camel hair, horse hair, cow tail hair, rabbit fur and insect fibres such as silk; vegetable fibres for example include cotton, corn silk and hemp fibre and synthetic fibres include nylon, LycraTM, polyester and the like. Preferably the textile material is sheep's wool.
  • the washing step is conducted at a temperature of between about 25°C to about 32°C, particularly preferably at about 28°C.
  • the aqueous washing solution can be either water alone or water containing an appropriate wetting and/or chelating agent such as an anionic detergent in low concentration, just sufficient to assist the "wetting-out" of the wool as it enters the wash bowl and/or a chelating (water softening) agent such as citric acid, polyphosphoric acid, sodium tripolyphosphate, CalgonTM and the like.
  • an appropriate wetting and/or chelating agent such as an anionic detergent in low concentration, just sufficient to assist the "wetting-out" of the wool as it enters the wash bowl and/or a chelating (water softening) agent such as citric acid, polyphosphoric acid, sodium tripolyphosphate, CalgonTM and the like.
  • wax is extracted from effluent from the scouring step.
  • wax may be extracted from the effluent by centrifugation, leaving an aqueous acidic detergent solution which may be re-used.
  • a chemical cracking process can be used to enhance wax recovery.
  • textile material, washing and/or scouring step effluents and textile material wax produced according to the process outlined above.
  • the effluent liquor from the washing step will contain sodium and potassium suint salt, plus dirt and a small quantity of detergent or wetting agent, and this liquor has value in composting operations.
  • the second wash bowl can then contain water only, or water plus some inorganic acid, such as sulphuric acid sufficient to maintain the pH value of the first scour bowl at around 4 to 5 as a result of some of this acidic water moving with the wool via the squeeze rollers.
  • some detergent or wetting agent e.g., dodecylbenzene sulphonic acid
  • This process yields a large amount of liberated dirt and ensures that the bulk of the suint salts are eliminated before the wool is subjected to the scouring process. It has been found advantageous to remove as much dirt as possible in the washing process, as finely divided clays and other dirt can in general contribute to an increased stability of the subsequent emulsions of wool wax, leading to lower yields of recovered wax in the centrifugation step of a conventional wool scour.
  • the preferred long-chain sulphonic acids for the claimed process are commercial linear-dodecylbenzene sulphonic acid which is in practice a mixture of the linear less than C-10, C-10, C-11 , C-12, C-13 , C-14 and greater than C-14 alkyl compounds, with a preponderance of the C-11 and C-12 acid.
  • This commercial product hereinafter referred to as linear alkylbenzene sulphonic acid is a preferred scouring agent, as are the individual sulphonic acids it contains. All these products usually contain a few percent of free sulphuric acid.
  • the present invention relates to the cleaning of wool and other textile materials, and in particular to a process for scouring raw wool which involves the use of anionic detergents, particularly those based on long-chain sulphonic acids.
  • the scouring agent consists of a mixture of the free acids together with the corresponding sodium, potassium or ammonium salts of the acids such that the pH value of the scour liquor lies in the range 3 to 7, preferably 4 to 5.
  • the overall process also preferably involves the use of a strong acid such as sulphuric acid which is added to the grease-laden scour liquor just prior to centrifugation so as to lower the pH to a value between 1 and 7, preferably 4 to 5.
  • the strong acid can also be added at other points in the process.
  • this scour bowl can be charged with a suitable mixture of free sulphonic acid and added alkali such that the pH value of the liquor is in the range 4 to 7.
  • Wool scourers Upon immersion in an aqueous solution above 40°C, the wool wax adhering to the wool fibres begins to melt forming an emulsion of wax, proteinacious material, dirt and suint.
  • Wool scourers often use a combination of three hot scour bowls (containing a detergent) and two or three rinse bowls to remove the contaminants, leaving a cleaned wool. The residual vegetable matter is removed further along the early stage wool processing pipeline, mainly in the carding process.
  • the hot scouring baths operate at approximately 50°C to 65°C to ensure that all the wool wax is molten. Modern detergents also show high efficiency in this temperature range.
  • the rinse bowls containing mains water, operate up to 50°C.
  • the liquor flow from one bowl to the next is in the opposite direction to the flow of wool - a counter-current system.
  • the initial concentration of detergents in the scour bowls is relatively low, and more detergent is added on a semi- continuous or continuous basis as wool flows along the system, bringing with it more wax.
  • the wax content of the liquor in the first two scour bowls reaches a "saturation" level, where most of the detergent present has been used up in forming a stable emulsion of wool wax in water and cleaning efficiency is declining, the liquor can then be diverted on a semi-continuous or continuous basis to a hydrocyclone and centrifuge train.
  • the hydrocyclones remove fine dirt and the centrifuges remove and concentrate wool wax.
  • wax recovery is greatly enhanced by the process of acidifying the liquor, at the point where it leaves the hydrocyclones and enters the primary centrifuge, with a strong acid such as sulphuric acid, so that the pH value is lowered to around 3. This "cracks" the emulsion, which is still at around 65°C, and the liquid wax is easily separated by centrifugation.
  • Wool wax is a useful material in the pharmaceutical, cosmetic and other industries, and can be sold to intermediary agents to produce lanolin. World's current best-practice in the wool scouring industry allows approximately 45% to 50% of the wool wax from the strong flow to be recovered economically.
  • the acidic underflow from the centrifuge train can then be returned to the scour bowls.
  • Other variants of this cracking process are outlined below.
  • the environmental and cost burden is greatly reduced.
  • the sale of wool wax can contribute significantly to a profit margin for the wool scourer.
  • wools having a high suint content and very fine dirt which is usually correlated with a high wax content
  • an acidic detergent such as linear alkylbenzenesulphonic acid provides opportunities for chemical "cracking" of the emulsion.
  • an acidic detergent such as linear alkylbenzenesulphonic acid
  • the entire volume of the emulsion leaving the hydrocyclones can be acidified, thereby releasing most of the wax prior to the liquor entering the centrifuge train.
  • this has significant implications for a simplified, lower-speed centrifuge system.
  • the liquor can first be first centrifuged in the normal manner in order to obtain un-oxidised wax.
  • Acid can then be added to the underflow to liberate the oxidised wax, which can be separately collected in a second centrifuge. At least two wax fractions can be encountered - the un-oxidised wax from the bulk of the fibre and oxidised wax from the fibre tips, which forms there as a result of photo-oxidation in sunlight throughout the growing season.
  • the first method uses an excess of sulphuric acid to react with alkylbenzene to produce "Batch Acid" which contains about 10% sulphuric acid and about 90% alkylbenzene sulphonic acid.
  • the second method uses sulphur trioxide gas to react with alkylbenzene to produce "Continuous Acid" that contains less than
  • Continuous acid on the other hand, with its much lower sulphuric acid content, does not significantly attack stainless steel, and can in fact be stored in mild steel for reasonably long periods of time.
  • Alkylbenzene sulphonic acid is normally supplied to detergent manufacturers as the acid containing 95% alkylbenzene sulphonic acid.
  • the sulphonic acid is then normally neutralised with caustic soda and/or other neutralising agents to form a ready-to-use detergent, e.g., a dishwashing liquid.
  • Neutralised alkylbenzene sulphonic acid can also be supplied as solutions in water up to about 25% active matter, or as a drum dried powder of about 80% active matter.
  • alkylbenzene sulphonic acids Compared to nonyl phenol ethoxylates, alkylbenzene sulphonic acids have poorer detergency on oily soil and poorer hard water tolerance but better performance on particulate soil. They are also not recognised for their emulsifying ability.
  • the scouring of wool involves the removal of wool wax (an oily soil) and a large quantity of dirt (a particulate soil) under conditions of often hard water to form an emulsion of the wool wax in water. It would normally be expected that alkylbenzene sulphonic acid under such conditions would be used at higher dosage rate than nonyl phenol ethoxylates. Our trials have shown quite the contrary.
  • Sulphuric acid 80 ml of 5% solution was added to bring the pH value to 2. This caused the separation of a voluminous precipitate of fine droplets of wool wax, which settled to the bottom of the vessel on account of entrainment of residual dirt (fine clay) particles.
  • the wax plus dirt was filtered off. After being dried, this material was then heated with mineral turpentine to dissolve the wax, and the mixture was filtered. The yield of wax was 41.5 g (i.e., 82% wax recovery).
  • This trial used 20 grams of greasy wool.
  • the wool was treated in an ultrasonic bath at 30°C for five minutes to simulate the first washing bowl.
  • the wool was dried and the grease content measured by solvent extraction.
  • the wool was then washed in a 0.1 % active solution of detergent at 65°C with agitation for three minutes then removed from the liquor and squeezed to simulate the squeeze rollers normally present in commercial scours.
  • the wool was then washed in water at 35°C for one minute to simulate the rinsing step usually used in commercial scours and squeezed to simulate the squeeze rollers normally present in commercial scours.
  • the wool was then dried and the grease content measured by solvent extraction.
  • the relative grease removal in the table below is based on linear alkylbenzene sulphonic acid having a grease removal of 100. Higher numbers for other detergents mean less grease recovery, lower numbers mean greater grease recovery.
  • Table 1 shows the final grease (wax) and ash contents of the scoured wool using linear alkylbenzene sulphonic acid as the scouring detergent from six trials at a manual mini-scour with the following configuration.
  • the wool portions were gently agitated by hand in each bowl, and passed from one bowl to the rtext through squeeze rollers. This was a batch-wise process - there was no counter- current flow of liquors.
  • Initial detergent concentrations were 0.05% in the wash bowls and 0.5% in the scour bowls, higher than would be used in a commercial counter-current system.
  • Trials 1 to 4 the pH of the scour was reduced by the addition of alkylbenzene sulphonic acid alone, in Trials 5 and 6, additional sulphuric acid was used.
  • This trial washed 921 kg of raw wool at a rate of 175 kg/hr over 5.3 hr.
  • the pH of B1 was 7.5 and rose to 9.2; B2, 7.0 to 9.1 ; B3, 2.3 to 8.3; B4, 2.1 to 8.2.
  • the average grease content of the cleaned wool was 0.69%, the lowest value being 0.53 and the highest 1.09.
  • the raw wool was fed at a rate of 1092 kg/hr and used 30 kg per 1000 kg of a typical detergent, nonylphenol 8 mole ethoxylate, which produced scoured wool with a grease content of 1.34% which was commercially acceptable.
  • One of the preferred detergents linear alkylbenzene sulphonic acid, was used at the rate of 60% of the nonyl phenol ethoxylate detergent dose, i.e., 18 kg/1000 kg of greasy wool, for three hours.
  • the pH of the scouring bowls was not adjusted and remained at similar levels to those encountered with the nonyl phenol 8 mole ethoxylate.
  • the raw wool was fed at a rate of 1185 kg per hour kg/hr and 6.24 kg per 1000 kg of a typical detergent, nonylphenol 8 mole ethoxylate was used, which produced scoured wool with a grease content of 1.21 % which was commercially acceptable
  • the preferred detergent, linear alkylbenzene sulphonic acid, was then introduced at the rate of 88% of the typical detergent dose, i.e., 5.5 kg/1000 kg of greasy wool, for three hours, pH of the scouring bowls was not adjusted and remained at similar levels to those encountered with the typical detergent. Scoured wool was produced with a grease content of 1.21% which was commercially acceptable.
  • Blends of detergents linear alkylbenzene sulphonic acid and nonylphenol 8 mole ethoxylate were used during the five day trial to give the results in the following table.
  • Linear alkylbenzene sulphonic acid detergent was used during the trial.
  • Trial C7 showed improved grease recovery rates and this trial incorporated four centrifuges rather then the normal three to ensure that the extra grease generated by the new process would not be above the capacity of three centrifuges to separate.
  • the trial used linear alkylbenzene sulphonic acid.
  • This trial involved a full week of full scale scour operation, with acid scouring using nonyl phenol 8 mole ethoxylate and linear alkylbenzene sulphonic acid individually at different times, totalling approximately 20% of the week.
  • the acid scouring process involved adjusted the pH just prior to the centrifuge train by the addition of sulphuric acid to 4 to 7.
  • Grease recovery for the week was 5% higher than would normally expected for a week scouring similar wools using nonyl phenol ethoxylate and normal operating conditions.
  • This trial showed that, assuming normal grease recovery rates for the time the scour was using nonyl phenol 8 mole ethoxylate in normal conditions, the recovery rate when the scour was using the acid scouring process was 25% higher than normal.
  • the processes of the present invention may include other steps not specifically recited, such as further washing, scouring, rinsing, centrifugation, separation, pH adjustment, temperature alteration or other steps.
  • the solutions adopted for the washing, scouring, rinsing, centrifugation and pH adjustment steps may include chemical species in addition to those specifically recited, and particularly including common acids and/or bases, chelating agents, wetting agents, detergents, textile material conditioning agents and the like, as long as their presence is compatible with the goals of the step or process concerned.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Animal Husbandry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
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Abstract

La présente invention concerne le lavage de laine brute et d'autres matières textiles graisseuses et/ou cireuses, et notamment un procédé de dégraissage de laine au moyen de détergents non ioniques, de détergents amphotères ou de mélanges correspondants. L'invention concerne également le dégraissage de laine dans un environnement acide. Par ailleurs, cette invention se rapporte à la récupération de pourcentages importants de cire de laine et permet de réutiliser des quantités importantes de l'eau utilisée pendant le dégraissage.
PCT/AU2002/000455 2001-04-12 2002-04-10 Procede de degraissage de laine WO2002083999A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NZ528619A NZ528619A (en) 2001-04-12 2002-04-10 Wool scouring process
AU2002245947A AU2002245947B9 (en) 2001-04-12 2002-04-10 Wool scouring process

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPR4399 2001-04-12
AUPR4399A AUPR439901A0 (en) 2001-04-12 2001-04-12 Cleaning process

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Publication Number Publication Date
WO2002083999A1 true WO2002083999A1 (fr) 2002-10-24

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PCT/AU2002/000455 WO2002083999A1 (fr) 2001-04-12 2002-04-10 Procede de degraissage de laine

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AU (1) AUPR439901A0 (fr)
NZ (1) NZ528619A (fr)
WO (1) WO2002083999A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110287245A1 (en) * 2011-07-02 2011-11-24 Ali Shamei Water-resistant silica-embedded textiles
WO2015134496A1 (fr) * 2014-03-04 2015-09-11 Basf Se Procédé de délintage de graines de coton

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU506648A1 (ru) * 1974-02-22 1976-03-15 Центральный научно-исследовательский институт шерстяной промышленности Способ промывки шерсти
SU1183575A1 (ru) * 1983-11-03 1985-10-07 Kazakhsk G Pk T I Legkoj СПОСОБ МОЙКИ ШЕРСТИ обработкой ее при рН 9,5-10,5 водным раствором моющего препарата на основе смеси сульфонатов с последующей обработкой в воде
WO1993013260A1 (fr) * 1991-12-23 1993-07-08 Precision Processes Textiles Procede pour le traitement de la laine
JPH10158693A (ja) * 1996-11-27 1998-06-16 Kyoeisha Chem Co Ltd 動物性繊維製品の水系洗浄方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU506648A1 (ru) * 1974-02-22 1976-03-15 Центральный научно-исследовательский институт шерстяной промышленности Способ промывки шерсти
SU1183575A1 (ru) * 1983-11-03 1985-10-07 Kazakhsk G Pk T I Legkoj СПОСОБ МОЙКИ ШЕРСТИ обработкой ее при рН 9,5-10,5 водным раствором моющего препарата на основе смеси сульфонатов с последующей обработкой в воде
WO1993013260A1 (fr) * 1991-12-23 1993-07-08 Precision Processes Textiles Procede pour le traitement de la laine
JPH10158693A (ja) * 1996-11-27 1998-06-16 Kyoeisha Chem Co Ltd 動物性繊維製品の水系洗浄方法

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Title
DATABASE WPI Derwent World Patents Index; AN 1979-36503B/19 *
DATABASE WPI Derwent World Patents Index; AN 1986-112162/17 *
DATABASE WPI Derwent World Patents Index; AN 1989-170996/23 *
DATABASE WPI Derwent World Patents Index; AN 1998-393778/34 *
MCCUTCHEON'S: "Emulsifiers & Detergents", 1996, MCCUTCHEON'S DIVISION, MC PUBLISHING CO. *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110287245A1 (en) * 2011-07-02 2011-11-24 Ali Shamei Water-resistant silica-embedded textiles
WO2015134496A1 (fr) * 2014-03-04 2015-09-11 Basf Se Procédé de délintage de graines de coton
US9963802B2 (en) 2014-03-04 2018-05-08 Basf Se Method of delinting cotton seeds
AU2015227368B2 (en) * 2014-03-04 2018-08-02 Basf Se Method of delinting cotton seeds

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AUPR439901A0 (en) 2001-05-17
NZ528619A (en) 2006-01-27

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